LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
78 of 130
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8.5.7 GetPacketStatus
Command GetPacketStatus(...) gets the status of the last received packet. Since the returned values are modem
dependent, the description hereafter is valid only for the (G)FSK modem.
• RxStatus bits are as follows:
Bits 31:24: RssiSync, RSSI values latched upon the detection of sync address. Negated, dBm, ufix(8,1).
Bits 23:16 RssiAvg, RSSI average over the payload of the received packet. Latched upon the packet_done IRQ.
Negated, dBm, ufix(8,1).
Bits 15:8 RxLen, Length of the received packet
Bit 7: RFU
Bit 6: RFU
Bit 5: Adrserr, Address filtering status of current packet. Asserted when the received packet address byte doesn’t
match the configured node_adrs(7:0) or broadcast(7:0) address according to the adrs_comp(1:0) configuration.
Bit 4: Crcerr, CRC check status of the current packet. Only applicable in Rx when the CRC check is not disabled. The
packet is available in FIFO.
Bit 3: Lenerr, Length filtering status of the current packet. Asserted when the length of the received packet is greater
than the Max length defined in the payload_len(7:0) field. Only applicable in Rx for variable length packets.
Bit 2: Aborterr, Abort status of the current packet. Asserted when the current packet is aborted with the pkt_abort_p
register field. Applicable in both Rx and Tx.
Bit 1: PktRcvd, Packet reception status. Indicates that the packet reception is done. Only show the completion of the
receive process and not the packet validity. Only applicable in Rx.
Bit 0: PktSent, Packet transmission status. Indicates that the packet transmission is done. Only applicable in Tx.
Table 8-20: GetPacketStatus Command
Byte 0 1
Data from Host 0x02 0x04
Data to Host Stat1 Stat2
Table 8-21: GetPacketStatus Response
Byte 0 1 2 3 4
Data from Host 0x00 0x00 0x00 0x00 0x00
Data to Host Stat1
RxStatus
(31:24)
RxStatus
(23:16)
RxStatus
(15:8)
RxStatus
(7:0)
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